This story is a sequel to Sunset Shimmer's magic adventures, Volume 2: The Villain Gauntlet.

One month has passed, during which everyone, heroes like villains, had a nice time. But nothing last forever, as Grogar finally set the last and final part of his plan into motion: Getting the Elements of Harmony for himself and use them to take over Equestria. It will definitively be the heroes' Darkest Hour and the villains' Finest Hour. But first, our heroes need to awaken the true power of their Element of Harmony to stand a chance against their enemies, who were given tremendous power by Grogar himself. And apparently, that include some time travel shenanigans...